In 2008 I sent a letter to this address: St John's Lutheran Church, P O Box 206, Port Hope, MI 48468 along with a copy of my grandmothers Confirmation Papers--at that time the church's telephone numbers were:
Office 989-428-4140
FAX 989-428-4811 AND PASTOR 989-428-3305

I'm assuming the church is still open.

I hope this info is helpful.